Getting Unhinged - SV650.org

squirrel_hunter · 03-09-11, 05:22 PM

I have a slight problem... I have some body work for an old Yamaha, the lower fairings to be precise. I have the left and right hand side which are joined together at the bottom by two metal hinges. My problem is they are seized. I need to separate them so suggestions please?

I have tried with WD40 on similar ones before and this has no effect as I imagine there is rust within the hinge. I doubt I'm the first to have the problem with this design so hopefully there is a known cure? Other things to note is that I have considered grinding the rivets off to remove the hinge in total to work on it separately but at the moment would prefer not to. Also if interesting chemicals are required damage to paint work is not an issue as these fairings require spraying.

For reference here is a picture of the offending hinges:

In a somewhat related thought I may regret starting this project as I'm off to buy shares in the WD40 company after having another look at the rust on the bike.

maviczap · 03-09-11, 05:41 PM

Bit of warming with a hot air gun?

On a low setting, so plastics not melted, or punch the hinge pins with a small punch?

But grinding the rivets off might be the only option?

Some other clever **** will come up with a better solution, mines just a personal theory, untested, untried and probably completely useless

Sid Squid · 03-09-11, 08:56 PM

Seen this a couple of times, I've needed to remove the hinges from the bodywork to free them off, as the effort needed to move them would have pulled the fixings out of the plastics which would have been worse to fix obviously.

timwilky · 04-09-11, 02:33 PM

Firstly, what makes you think a water displacement spray would unsieze a rusted hinge?

Drill out the pop rivets, and replace the hinges with decent replacements.

squirrel_hunter · 04-09-11, 03:23 PM

Quote:

Originally Posted by timwilky

Firstly, what makes you think a water displacement spray would unsieze a rusted hinge?

What I said was:

Quote:

Originally Posted by squirrel_hunter

I have tried with WD40 on similar ones before and this has no effect as I imagine there is rust within the hinge.

But let me elabourate... I did try WD40 before, when I first encountered hinges like this approximately some 12 years ago. Back then I knew very little about maintenance and even less about WD40. Some may argue little has changed. That is why this time I haven't used anything on the hinges yet as I thought I'd canvas opinion first.

Quote:

Originally Posted by timwilky

Drill out the pop rivets, and replace the hinges with decent replacements.

What would a decent replacement hinge look like and where would I get a pair?

04-09-11, 03:30 PM

What old Yamaha has these type of hinges between the fairing lowers - are they standard fit?

DJ123 · 04-09-11, 07:11 PM

what about ac 50?

Sid Squid · 04-09-11, 09:34 PM

Quote:

Originally Posted by daddyjob

what about ac 50?

Do you mean ACF50? - that's neither lubricant nor penetrant.

squirrel_hunter · 04-09-11, 09:57 PM

Quote:

Originally Posted by Lozzo

What old Yamaha has these type of hinges between the fairing lowers - are they standard fit?

These are standard OEM fairings c.1989.

stormingjoe · 04-09-11, 10:32 PM

Drill rivets, remove hinges and immerse in duck oil or similar penetrating fluid, preferably warmed, maybe on a radiator leave for 48 hours to soak, then try to move, if not leave for 12 hours and continue trying to move, until they free up, do this is if you want to keep these hinges-patience and gentle persuasion required, or just buy new hinges maybe from DIY place.

03-09-11, 05:22 PM	#1
squirrel_hunter Member Mega Poster Join Date: Apr 2005 Location: Sunny Swindon Posts: 3,579	Getting Unhinged I have a slight problem... I have some body work for an old Yamaha, the lower fairings to be precise. I have the left and right hand side which are joined together at the bottom by two metal hinges. My problem is they are seized. I need to separate them so suggestions please? I have tried with WD40 on similar ones before and this has no effect as I imagine there is rust within the hinge. I doubt I'm the first to have the problem with this design so hopefully there is a known cure? Other things to note is that I have considered grinding the rivets off to remove the hinge in total to work on it separately but at the moment would prefer not to. Also if interesting chemicals are required damage to paint work is not an issue as these fairings require spraying. For reference here is a picture of the offending hinges: In a somewhat related thought I may regret starting this project as I'm off to buy shares in the WD40 company after having another look at the rust on the bike. __________________ "A little enthusiastic?" May I add here, GG is awesome and I think I am in love with Stretchie...he rocks my world! SH2 \| 2MA \| GROM \| YSR

03-09-11, 05:41 PM	#2
maviczap Member Mega Poster Join Date: Mar 2007 Posts: 9,097	Re: Getting Unhinged Bit of warming with a hot air gun? On a low setting, so plastics not melted, or punch the hinge pins with a small punch? But grinding the rivets off might be the only option? Some other clever **** will come up with a better solution, mines just a personal theory, untested, untried and probably completely useless __________________ We're riding out tonight to case the promised land Make everyday count RIP Reeder - Jolly Green Giant and comedy genius

03-09-11, 08:56 PM	#3
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Getting Unhinged Seen this a couple of times, I've needed to remove the hinges from the bodywork to free them off, as the effort needed to move them would have pulled the fixings out of the plastics which would have been worse to fix obviously. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

04-09-11, 02:33 PM	#4
timwilky Member Mega Poster Join Date: Mar 2004 Location: Not in Yorkshire. (Thank God) Posts: 4,116	Re: Getting Unhinged Firstly, what makes you think a water displacement spray would unsieze a rusted hinge? Drill out the pop rivets, and replace the hinges with decent replacements. __________________ Not Grumpy, opinionated.

04-09-11, 03:30 PM	#6
Lozzo Guest Posts: n/a	Re: Getting Unhinged What old Yamaha has these type of hinges between the fairing lowers - are they standard fit?

04-09-11, 07:11 PM	#7
DJ123 Member Mega Poster Join Date: Jul 2011 Location: Somewhere over there Posts: 3,245	Re: Getting Unhinged what about ac 50?

04-09-11, 10:32 PM	#10
stormingjoe Member Join Date: Oct 2010 Location: Norf Hampshire Posts: 152	Re: Getting Unhinged Drill rivets, remove hinges and immerse in duck oil or similar penetrating fluid, preferably warmed, maybe on a radiator leave for 48 hours to soak, then try to move, if not leave for 12 hours and continue trying to move, until they free up, do this is if you want to keep these hinges-patience and gentle persuasion required, or just buy new hinges maybe from DIY place.